Electrical apparatus.



A. LONGORIA.

ELECTRICAL APPARATUS.

APPLICATION FILED JULY 7, I916.

Patented Jan. 7,1919. 2 SHEETS-SHEETI HHHHM A. LONGORIA.

ELECTRICAL APPARATUS.

APPLICATION FILED JULY 1. 1916.

Patented J an. 7, 1919.

2 SHEETSSHEET 2.

- coil S so that the currents cross section through the main casing;

' ternations in the secondarg 1 UNITED STATES PATENT OFFICE.

ANTONIO LONGORIA, OF CLEVELANIL OH IO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE STERLING: ELECTRICAL CORPORATION COMPANY, OF CLEVELAND, OHIO, A

CORPORATION OF OHIO.

ELECTRICAL nrrane'rns.

Specification of Letters Patent.

Patented Jan. '7, 1919.

Application filed July 7,1916. Serial No. 107,963.

tns, of whichthe following is a specification.

This invention relates to electrical apparatus, and more particularly to combined apparatus for producing high tension and faradic currents. The apparatus is designed for therapeutical use, although not limited to this use, and is capable of application for other purposes.

The object of the invention is to provide a simple and compact form of apparatus for producing both kinds of current mentioned and which apparatus can be made at low cost, is easily manipulated and further provides for regulation within limits of the ten:

sion of the two'kinds of current.

Further objects of the invention are in part obvious and in part will appear more in detail hereinafter.

In the drawings Figure 1 is a diagrammatical view of the circuits; Fig. 2 is a per spective view of the apparatus; 3 a

1g. 4 is a detailed cross sectional VIBW, of the interrupter.

Referring prises circuits including condenser-O, and a prlmary coil cuit with each other and connected to a suitable source of current B, which may be a battery or an ordinary electric light circuit, either alternating or direct current. The primar coil P, and condenser C are in parto Fig. 1 the apparatus coman interrupter I, a

allel with each other, both being in a serles with the interrupter. The primary coil is inductively associated with the secondary roduced in the frequency alwindmg. One end of the seconda coi is connected to an electrode E, whi e the other end of said coil is turned upon itself to form a return primary circuit induce hig v loop L. The'secondary coil is consequently free of conductive connection to any other part of the circuit. This arrangement is oundto produce satisfactory, and, indeed, improved results in practice, due to the more even distribution from the electrode E and the avoidance of localized shock. The effects are also modified by the presence of the return loop L, without which there isordinarily a tendency at the free end of the coil S to localize the charge and collect sufficient potential to pierce the insulation. While the exact theory of operation of this return loop is not clear practical experience shows that it prevents rupture of the insulation and modifies the discharge from the electrode B so as to securea gentle, even application of the high tension current.

The interrupter L comprises a laminated or multiple parallel wire core X within a winding W, saidwinding being in series wlth the condenser and primary coil P as before stated. In the circuit to one of said members, such as the primary coil P, is a spring contact M whose position is controlled by a pressure screw N. This contact is opposite the end of the core X, and, in conjunction therewith, acts as an armature which vibrates opposite the end of the core and makes and breaks the contact tothe screw N. By adjusting this screw in or out the frequency of the make and break may be altered so as to vary the potential of the currents through the coils P and S.

The apparatus is also arranged for the production of so called faradic current, which is ordinarily transmitted to electrodes E to be held in the two hands or to be applied to different portions of the body. For this purpose the present device is provided with a coil Z inductively associated with the winding W. Said coil is provided with a plurality of taps T, one at each end of the coil and others connected at intervals along its length, each a contact U to which one of the electrodes E may be connected. The provision of a plurality of taps enables said electrodes to be connected to any selected portion. of the coil Z to thereby vary the current efiect ob tained from the electrodes E By making the intervals between the taps T equal and connectingcthe electrodes to the proper ones of the contacts U any desired potential may be secured across the electrodes. For example, if the two electrodes are connected in Fig. 1 to the contacts'l and 2 the faradic effect produced is less than when said electrodes are connected to the contacts 1 and 3, 1 and 4:, or 2 and 4, etc. By properly proportioning the wire intervals between the taps of said taps terminating 1n and by proper application of the electrodes any desired effect, within limits, may be obtained.

In the commercial form the several membersof the apparatus are inclosed with a -suitable casing or casings. For example 10 indicates a hollow insulating main casing with a narrow base 11 and enlarged upper portion 12'. Within the base is located a condenser C, while the-upper part of the base incloses the associated windings of the interrupter and faradic circuit. designated W, Z, in vFig. 2'. The several taps T from the coil Z are connected to a series of contacts U, shown as tubular members lying in order on one side of the casing with their 'open ends opposite perforations or apertures 13 in the end casing head. The electrodes E are connected by lead wires to plugs which may be inserted through the holes 13 into the proper ones of the contacts U.

The primary and secondary coils P, S, are in a supplemental insulating casing 15 connected by a flexible lead wire 16 to the main casing. Said supplemental casing is pro vided at one end with an opening to receive the shank of the electrode E.

This apparatus is of very simple form and can be readily manipulated by the patient.

It can be made at low cost and is economical in operation, It enables either high tensionor faradic currents to be produced at the option of the operator.

WhatIclaimis:-

1, In electrical apparatus, the combination of an interrupter and interrupter coil and a primary winding electrically connected in circuit with each other, and a faradic coil inductively associated with said interrupter coil and provided with means for connecting electrode leads thereto.

mary winding electrically connected in. circuit with each other, of faradic apparatus comprising a coil inductively associated with said interrupter coil, and means for connecting electrodes in circuit with a'selected portion of said coil.

4. In electrical apparatus, the combination with high frequency apparatus comprising an interrupter coil, a condenser, and a primary winding electrically connected in circuit with each other, of faradic apparatus comprising a coil inductively associated with said interrupter coil, and contacts connected at intervals along the. length of said faradic coil to any two of which electrodes may be connected.

--5. In electrical apparatus, an insulating casing, inductively associated coils therein, a condenser at one side of said coils, a circuit interrupter, one of said coils,-said condenser and said interrupter being electrically connected to each other, and a plurality of contact devices connected at intervals to the other coil and lying opposite openings in the casing, through which openings electrode-leads may be introduced to any-two of said contacts. i

In testimony whereof I aflix my signature.

ANTONIO LONGORIA. 

